title: Magnetic resonance imaging of the paranasal sinuses in divers.
abstract: BACKGROUND
  CT and magnetic resonance imaging (MRI) frequently reveal asymptomatic paranasal sinus mucosal hypertrophy in the general population.
  
  
  OBJECTIVE
  Divers can suffer asymptomatic paranasal sinus mucosal injury secondary to barotrauma.
  
  
  METHODS
  We examined 20 professional divers by MRI and compared them to 20 normal controls. Paranasal sinus mucosal hypertrophy was defined as mucosal thickening of 3 mm or greater.
  
  
  RESULTS
  Nine divers had paranasal sinus mucosal hypertrophy vs. four controls (p = 0.09). There was no significant relationship between paranasal sinus hypertrophy and age, diving history, alcohol consumption, or smoking.
  
  
  CONCLUSIONS
  Divers had a tendency toward paranasal sinus mucosal hypertrophy.
authors.affiliation: National Defense Medical College, Department of Traumatology and Critical Care Medicine, Saitama, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yanagawa
authors.forename: Y
authors.initials: Y
authors.lastname: Okada
authors.forename: K
authors.initials: K
authors.lastname: Ishida
authors.forename: H
authors.initials: H
authors.lastname: Fukuda
authors.forename: F
authors.initials: F
authors.lastname: Hirata
authors.forename: K
authors.initials: K
authors.lastname: Fujita
mesh_terms: D000328:Adult; D000428:Alcohol Drinking / Q000009:adverse effects; D001469:Barotrauma / Q000473:pathology*; D016022:Case-Control Studies; D004242:Diving / Q000293:injuries*; D006801:Humans; D006984:Hypertrophy; D015994:Incidence; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D008889:Military Personnel; D009092:Mucous Membrane; D010256:Paranasal Sinuses / Q000293:injuries*; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects